PERMANENT ALTERNATIVE. “Cessation presents a weak business model: ‘if you have a product that helps people to stop smoking … then your market gets smaller and smaller. Following the pharmaceutical industry’s lead, therefore, some e-cigarette marketing is focusing on long-term use, as a permanent alternative to tobacco.”
http://www.cancerresearchuk.org/prod_consump/groups/cr_common/@nre/@pol/documents/generalcontent/cr_115991.pdf